KR101885229B1 - Battery control device - Google Patents

Battery control device Download PDF

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KR101885229B1
KR101885229B1 KR1020167005178A KR20167005178A KR101885229B1 KR 101885229 B1 KR101885229 B1 KR 101885229B1 KR 1020167005178 A KR1020167005178 A KR 1020167005178A KR 20167005178 A KR20167005178 A KR 20167005178A KR 101885229 B1 KR101885229 B1 KR 101885229B1
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South Korea
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vehicle
battery
engine
idle stop
stopped
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KR1020167005178A
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Korean (ko)
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KR20160038002A (en
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마사시 세키자키
미치토 에노모토
다케유키 시라이시
다케시 이타가키
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야자키 소교 가부시키가이샤
가부시키가이샤 지에스 유아사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0038—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/44—Drive Train control parameters related to combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/44—Drive Train control parameters related to combustion engines
    • B60L2240/441—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2260/00—Operating Modes
    • B60L2260/20—Drive modes; Transition between modes
    • B60L2260/22—Standstill, e.g. zero speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904—Component specially adapted for hev
    • Y10S903/907—Electricity storage, e.g. battery, capacitor

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • Sustainable Energy (AREA)
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  • Automation & Control Theory (AREA)
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  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Secondary Cells (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

CPU(10)가 행하는 자기 진단 처리는, 취득한 차량 동작 정보 및 엔진 동작 정보를 기초로, 차량이 아이들 스톱 상태에 있는지 여부를 판단하여, 이상 검출 처리를 행한다. 아이들 스톱 기능을 탑재하는 차량에서 엔진이 정지된 경우, 차량의 전장 부품으로 전력이 공급되므로, 전지로부터 전장 부품에 대하여 전류 공급이 이루어지게 된다. 그 결과, CPU(10)는, 차량 정지 중 또한 이그니션(30)이 온 상태에서 전류 계측을 실시하였을 시의 전류 계측 결과에 의해, 규정의 전류값 이하이면, 계측계에 이상이 있다고 판단한다. 이에 따라, 축전지의 상태를 검출 가능한 전지 제어 장치에 있어서, 심플한 자기 진단 처리로 계측계의 이상 검출 처리를 가능하게 하는 기술을 제공한다.The self-diagnosis process performed by the CPU 10 determines whether or not the vehicle is in an idle stop state based on the acquired vehicle operation information and engine operation information, and performs an anomaly detection process. When the engine is stopped in the vehicle equipped with the idle stop function, electric power is supplied to the electric component of the vehicle, so that electric current is supplied to the electric component from the battery. As a result, the CPU 10 determines that there is an abnormality in the measuring system when the current is below the specified current value, based on the result of the current measurement when the vehicle is stopped and the current measurement is performed when the ignition 30 is turned on. There is provided a battery control device capable of detecting the state of a battery, which enables a simple abnormality detection process of a measurement system to be performed.

Description

전지 제어 장치{BATTERY CONTROL DEVICE}[0001] BATTERY CONTROL DEVICE [0002]

본 발명은, 전지 제어 장치에 관한 것이며, 예를 들면, 전지 시스템의 자기 진단 기능을 가지는 전지 제어 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery control device, for example, a battery control device having a self-diagnosis function of a battery system.

전기 자동차나 PHV(플러그인 하이브리드 자동차)가 실용화되어 다양한 차종이 시장에 투입되도록 되어 있다. 이러한 차량에 있어서는, 동력원으로서 전력이 이용된다. 또한, 아이들 스톱 기능을 탑재하여 연료 소비율의 개선이 도모되도록 되어 있다. 또한, 이러한 차량에 있어서는, 시스템의 신뢰성, 즉 전지 제어 장치를 포함하는 전지 유닛의 신뢰성 확보가 매우 중요하다. 그리고, 전지 제어 장치에 있어서는 자기 진단 기능을 실행하여, 이상 발생을 파악하는 것이 이루어지고 있다.Electric vehicles and PHVs (plug-in hybrid vehicles) have been put into practical use so that various kinds of vehicles are put into the market. In such a vehicle, electric power is used as a power source. In addition, an idle stop function is mounted to improve the fuel consumption rate. Further, in such a vehicle, it is very important to ensure the reliability of the system, that is, the reliability of the battery unit including the battery control device. In the battery control apparatus, a self diagnosis function is executed to detect an occurrence of an abnormality.

도 1은 공지의 자기 진단 기능을 가지는 전지 시스템의 제어부(CPU(110))를 나타내는 블록도이다. 또한, 도 2는 CPU(110)에 의한 자기 진단 기능의 처리를 나타내는 플로우 차트이며, 주로, 전류 계측계의 이상 검출 처리에 착안하여 나타내고 있다.1 is a block diagram showing a control unit (CPU 110) of a battery system having a known self-diagnosis function. 2 is a flowchart showing the processing of the self-diagnosis function by the CPU 110, mainly focusing on the abnormality detection processing of the current measurement system.

취득한 전지(V)의 전압 변화에 대한 전류 변화량이 사전에 정해진 후, CPU(110)는, 그에 따라 이상 검출을 행하고 있었다. 구체적으로는, CPU(110)는, 계측계 자기 진단을 개시하여(S110), 이그니션(130)이 오프이면(S112의 N), 규정 전압 변화를 검지하는 처리를 행한다(S114). CPU(110)는, 규정 전압 변화를 검지하면 (S114의 Y), 방전 전류가 규정 전류 이하인지 여부를 검지하는 처리를 행한다(S116). 규정 전류 이하이면(S116의 Y), CPU(110)는 전류 계측계(120)에 이상이 발생하고 있다고 판단한다(S118).After the amount of current change with respect to the voltage change of the acquired battery V is determined in advance, the CPU 110 performs abnormality detection accordingly. Specifically, the CPU 110 starts the measurement system self-diagnosis (S110), and if the ignition 130 is off (N in S112), the CPU 110 performs a process for detecting a specified voltage change (S114). When the CPU 110 detects a change in the prescribed voltage (Y in S114), the CPU 110 performs a process for detecting whether or not the discharge current is equal to or smaller than the predetermined current (S116). If it is less than the specified current (Y in S116), the CPU 110 determines that an abnormality has occurred in the current measuring system 120 (S118).

이러한 전지 시스템에 있어서 2차 전지의 열화나 계측계의 이상을 검출할 수 있는 자기 진단 기술에 대하여 알려져 있다(예를 들면 특허, 문헌 1 참조). 구체적으로는, 특허 문헌 1에 개시된 기술은, 전류 측정부에 의해 검출된 전류를 적산함으로써 이차 전지의 충전 상태(SOC)를 산출하고, 전압 측정부 및 전류 측정부의 측정값에 의거하여, 소정의 제 1 및 제 2 타이밍에 있어서의 이차 전지의 개방 전압을 제 1 및 제 2 개방 전압값으로서 추정한다. 계속해서, 제 1 및 제 2 타이밍에 있어서의 제 1 및 제 2 SOC에 의거하여 이차 전지의 충방전량에 관한 제 1 정보를 취득하고, 제 1 및 제 2 타이밍에 있어서의 제 1 및 제 2 개방 전압값에 의거하여, 이차 전지의 충방전량에 관한 제 2 정보를 취득하고, 제 1 및 제 2 정보에 의거하여 이차 전지, 전압 검출부 및 전류 검출부에 있어서의 이상 유무를 판정한다.In such a battery system, a self-diagnosis technique capable of detecting deterioration of a secondary battery and an abnormality of a measuring system is known (see, for example, Patent, Document 1). Specifically, the technique disclosed in Patent Document 1 calculates the state of charge (SOC) of the secondary battery by integrating the current detected by the current measuring unit, and calculates the state of charge (SOC) of the secondary battery based on the measured value of the voltage measuring unit and the current measuring unit The open-circuit voltage of the secondary battery at the first and second timings is estimated as the first and second open-circuit voltage values. Subsequently, based on the first and second SOCs at the first and second timings, first information on the charge / discharge amount of the secondary battery is acquired, and the first and second openings at the first and second timings Second information on the charge / discharge amount of the secondary battery is acquired based on the voltage value, and the presence / absence of abnormality in the secondary battery, the voltage detection unit, and the current detection unit is determined based on the first and second information.

일본 공개특허 특개2010-200574호 공보Japanese Unexamined Patent Application Publication No. 2010-200574

그런데, 도 1 및 도 2에서 나타낸 종래 기술에서는, 전압 측정계가 정상인 것이 전제로 되어 있다. 이 때문에, 이상이 발생하였다고 판단한 경우라도, 전압 계측계의 이상인지 전류 계측계의 이상인지가 구별되지 않는다는 과제가 있었다. 특허 문헌 1에 개시된 기술에 있어서도 마찬가지였다. 이 때문에, 이상 검출하는 자기 진단 처리가 증가되어버려, 처리가 복잡해지거나, 또한, 자기 진단 처리의 타이밍이 한정되어 버린다는 과제가 있어, 별도의 기술이 요구되고 있었다.Incidentally, in the prior art shown in Figs. 1 and 2, it is premised that the voltage measuring system is normal. Therefore, even when it is determined that an abnormality has occurred, there is a problem in that it is not distinguished whether the abnormality is in the abnormality current measuring system of the voltage measuring system or not. The same was true of the technique disclosed in Patent Document 1. For this reason, there is a problem that the self-diagnosis process for abnormality detection is increased, the process becomes complicated, and the timing of the self-diagnosis process becomes limited, and another technique has been required.

본 발명의 목적은, 이러한 상황을 감안하여 이루어진 것으로서, 상기 과제를 해결하는 기술을 제공하는 것에 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a technique for solving the above problems, which has been made in view of this situation.

본 발명은, 전지 시스템의 자기 진단 기능을 가지는 제어부를 포함한 전지 제어 장치로서, 상기 제어부는, 차량 동작 상태의 정보 및 엔진 동작의 정보를 기초로, 차량이 동작 상태이고, 또한 엔진 정지 상태인 경우에, 축전지의 방전 전류의 값이 규정 이하이면, 이상이 발생하고 있다고 판단한다.The present invention is a battery control apparatus including a control unit having a self-diagnosis function of a battery system, wherein the control unit is configured to control the battery system based on information of the vehicle operation state and information of the engine operation, , It is judged that an abnormality occurs if the value of the discharge current of the battery is less than the specified value.

또한, 상기 차량 동작 상태의 정보는 이그니션이 온인지 여부의 정보여도 된다.The information on the vehicle operation state may be information on whether or not the ignition is on.

또한, 상기 엔진 동작의 정보는 엔진 회전수여도 된다.In addition, the information on the engine operation may be an engine rotation number.

또한, 당해 전지 제어 장치는, 전형적으로는, 차량 동작 중에 진행 정지하여 엔진이 정지된 아이들 스톱 상태에서 차량의 전장 부품에 대하여 당해 차량에 탑재되어 있는 상기 축전지로부터 전력 공급이 이루어지는 아이들 스톱 기능을 탑재한 차량에 적용되고, 상기 제어부는, 이그니션이 온 상태이고, 또한, 엔진이 정지 중일 경우에 상기 아이들 스톱 상태라고 판단함과 함께, 상기 축전지의 방전 전류의 값이 규정 이하일 경우에 전류 계측계에 이상이 발생하고 있다고 판정한다.The battery control device typically includes an idle stop function for supplying electric power from the battery mounted on the vehicle to an electric component of the vehicle in an idle stop state in which the engine is stopped while the vehicle is stopped during operation The control unit determines that the vehicle is in the idle stop state when the ignition is on and the engine is stopped, and when the value of the discharge current of the battery is less than the specified value, It is determined that an abnormality has occurred.

본 발명에 의하면, 축전지의 상태를 검출 가능한 전지 제어 장치에 있어서, 심플한 자기 진단 기능으로 계측계의 이상 검출 처리를 가능하게 하는 기술을 제공할 수 있다. 또한, 다른 관점에서는, 자기 진단 처리의 타이밍을 늘릴 수 있다.According to the present invention, in the battery control device capable of detecting the state of the battery, it is possible to provide a technique that enables the abnormality detection processing of the measurement system by a simple self-diagnosis function. Further, from another viewpoint, the timing of the self-diagnosis process can be increased.

도 1은, 배경 기술에 관련된 자기 진단 기능을 가지는 전지 시스템의 제어부를 나타내는 블록도이다.
도 2는, 배경 기술에 관련된 제어부(CPU)에 의한 자기 진단 기능의 처리를 나타내는 플로우 차트이다.
도 3은, 실시 형태에 관련된 자기 진단 기능을 가지는 전지 시스템의 제어부를 나타내는 블록도이다.
도 4는, 실시 형태에 관련된 제어부(CPU)에 의한 자기 진단 기능의 처리를 나타내는 플로우 차트이다.1 is a block diagram showing a control unit of a battery system having a self-diagnosis function related to the background art.
2 is a flowchart showing the processing of the self-diagnosis function by the control unit (CPU) related to the background art.
3 is a block diagram showing a control section of a battery system having a self-diagnosis function according to the embodiment.
4 is a flowchart showing the processing of the self-diagnosis function by the control unit (CPU) according to the embodiment.

이하, 발명을 실시하기 위한 형태(이하, '실시 형태'라고 함)를, 도면을 참조하여 설명한다.DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments for carrying out the invention (hereinafter referred to as "embodiments") will be described with reference to the drawings.

도 3은, 본 실시 형태에 관련된 자기 진단 기능을 가지는 전지 시스템(1)의 제어부(전지 제어 장치)인 CPU(10)(마이크로 컴퓨터)를 나타내는 블록도이다.3 is a block diagram showing the CPU 10 (microcomputer) as the control unit (battery control device) of the battery system 1 having the self-diagnosis function according to the present embodiment.

CPU(10)는, 자기 진단 처리를 행하는 기능(자기 진단 기능)을 구비하고 있고, 하이브리드 자동차나 전기 자동차 등의 차량에 탑재되는 전지 시스템(1)의 제어를 행하는 것으로서, 차량 동작 상태의 정보(이하, '차량 동작 정보'라고 하는 경우가 있다.) 및 엔진 동작의 정보(이하, '엔진 동작 정보'라고 하는 경우가 있다.)를 취득함과 함께, 전지 전압 및 충방전 전류를 계측한다.The CPU 10 has a function of performing a self-diagnosis process (a self-diagnosis function), and controls the battery system 1 mounted on a vehicle such as a hybrid vehicle or an electric vehicle. (Hereinafter also referred to as " vehicle operation information ") and information on the engine operation (hereinafter, may be referred to as " engine operation information ") and measures the battery voltage and the charge / discharge current.

본 실시 형태에 있어서 CPU(10)가 행하는 자기 진단 처리는, 취득한 차량 동작 정보 및 엔진 동작 정보를 기초로, 차량이 아이들 스톱 상태에 있는지 여부를 판단하여, 이상 검출 처리를 행한다. 아이들 스톱 기능을 탑재하는 차량에서는, 차량 동작 중에 진행 정지된 경우, 소정의 조건을 충족시키면, 엔진이 정지된다. 이 상태에서는, 차량의 전장 부품에는, 탑재되어 있는 전지(축전지)(V)로부터 전원(전력)이 공급된다. 이 때문에, 이 상태에서는 반드시 전지(V)로부터 전장 부품에 대하여 전류가 흐르게 된다. 그 결과, CPU(10)는, 차량 정지 중 또한 이그니션(30)이 온 상태에서 전류 계측을 실시하였을 시의 전류 계측 결과에 의해 계측계에 이상이 있는지 여부를 검출한다.In the present embodiment, the self-diagnosis process performed by the CPU 10 determines whether or not the vehicle is in the idle stop state based on the acquired vehicle operation information and the engine operation information, and performs the anomaly detection process. In a vehicle equipped with an idle stop function, when the vehicle is stopped while the vehicle is running, if the predetermined condition is satisfied, the engine is stopped. In this state, electric power (electric power) is supplied from the battery (storage battery) V mounted on the electric component of the vehicle. Therefore, in this state, a current always flows from the battery V to the electric component. As a result, the CPU 10 detects whether there is an abnormality in the measurement system based on the current measurement result when the current measurement is performed while the vehicle is stopped and the ignition 30 is turned on.

도 4는, CPU(10)에 의한 자기 진단 기능의 처리를 나타내는 플로우 차트로서, 특히 전류 계측계(20)의 이상 검출 처리에 착안하여 나타내는 것이다.Fig. 4 is a flowchart showing the processing of the self-diagnosis function by the CPU 10, particularly showing an anomaly detection process of the ammeter 20.

CPU(10)는, 계측계의 자기 진단 처리를 개시하면(S10), 이그니션(30)이 온 상태인지 여부를 판단한다(S12). 이그니션(30)이 온 상태일 경우(S12의 Y), CPU(10)는, 취득한 엔진 회전수 정보(ENGRPM)(40)로부터 엔진 회전수가 0보다 큰지 여부를 판단한다(S14). 즉, 엔진이 동작 중인지 정지 중인지를 판단한다.When the self-diagnosis process of the measurement system is started (S10), the CPU 10 determines whether or not the ignition 30 is on (S12). When the ignition 30 is on (Y in S12), the CPU 10 determines whether the engine speed is greater than zero or not (S14) from the acquired engine speed information (ENGRPM) 40. That is, it is determined whether the engine is operating or not.

엔진 회전수가 0 이하인, 즉, 엔진이 정지 중이면(S14의 N), CPU(10)는 아이들 스톱 상태라고 판단함과 함께, 전류 계측계(20)로부터 전류값을 취득하여, 규정보다 큰 방전 전류가 흐르고 있는지 여부를 판단한다(S16). 상기 서술한 바와 같이, 아이들 스톱 상태의 경우에는, 차량의 전장 부품에 대하여 전력 공급이 이루어지므로, 정상이면 규정보다 큰 방전 전류가 흐르고 있을 필요가 있다. 따라서, 규정보다 큰 방전 전류가 흐르지 않고 있는 경우, 즉, 방전 전류의 값이 규정 이하일 경우(S16의 N), CPU(10)는 전류 계측계(20)에 이상이 발생하고 있다고 판정한다(S18).If the engine speed is 0 or less, that is, if the engine is stopped (N in S14), the CPU 10 determines that the vehicle is in the idle stop state, and acquires the current value from the ammeter 20, It is determined whether a current is flowing (S16). As described above, in the case of the idle stop state, electric power is supplied to electric components of the vehicle. Therefore, if it is normal, a discharge current larger than the regulation must flow. Therefore, when the discharge current is not larger than the prescribed value, that is, when the value of the discharge current is less than the specified value (N of S16), the CPU 10 determines that an abnormality has occurred in the current measuring system 20 ).

이그니션(30)이 오프 상태일 경우(S12의 N), 엔진이 동작 중일 경우(S14의 Y) 및 아이들 스톱 상태에서 규정보다 큰 방전 전류가 흐르고 있을 경우(S16의 Y), CPU(10)의 처리는 S12의 처리로 되돌아간다.When the ignition 30 is off (N in S12), the engine is in operation (Y in S14), and when a discharge current larger than the specified value flows in the idle stop state (Y in S16) The process returns to the process of S12.

이상, 본 실시 형태에 의하면, 전류 계측 결과에서 규정보다 큰 방전 전류값이 아니었을 경우, 즉, 방전 전류의 값이 규정 이하일 경우에, 계측계에 이상 있음으로 판단할 수 있다. 즉, 심플한 구성·처리에 의해, 전압계에 좌우되지 않고 전류 계측계의 이상 판정을 행할 수 있다. 그리고, 그 결과(이상)를 상위의 시스템으로 경고할 수 있어, 상위의 시스템은 조기의 적절한 대응이 가능해진다.As described above, according to the present embodiment, it can be judged that there is an abnormality in the measurement system when the current measurement result is not a discharge current value larger than the prescribed value, that is, when the value of the discharge current is below the specified value. In other words, it is possible to perform the abnormality determination of the ammeter without being influenced by the voltmeter by simple configuration and processing. Then, the result (above) can be warned by the upper system, and the upper system can cope with early and appropriate.

또한, 차량 동작 정보(이그니션(30)이 온인지 여부의 정보)와 엔진 회전수 정보(40)를 사용함으로써 자기 진단 처리의 타이밍이 늘어나, 이상을 검출하는 능력을 향상시킬 수 있다.Further, by using the vehicle operation information (information on whether the ignition 30 is on) and the engine rotation number information 40, the timing of the self-diagnosis processing is increased, and the ability to detect an abnormality can be improved.

이상, 본 발명을 실시 형태를 기초로 설명하였다. 이 실시 형태는 예시이며, 그들의 각 구성 요소 및 그 조합에 다양한 변형예가 가능한 것, 또한 그러한 변형예도 본 발명의 범위에 있는 것은 당업자에게 이해되는 바이다. 예를 들면, 자기 진단 처리를 하는 구성으로서 1개의 CPU(10)를 예시하였지만, 당연히 복수의 CPU로 구성되어도 된다.The present invention has been described based on the embodiments. It is to be understood by those skilled in the art that these embodiments are illustrative and that various modifications may be made to the respective components and combinations thereof, and that such modifications are also within the scope of the present invention. For example, although one CPU 10 is exemplified as the configuration for performing the self-diagnosis process, it may naturally be composed of a plurality of CPUs.

1 전지 시스템
10 CPU(전지 제어 장치)
20 전류 계측계
30 이그니션(차량 동작 정보)
40 엔진 회전수 정보1 battery system
10 CPU (battery control unit)
20 Current measuring system
30 Ignition (vehicle motion information)
40 Engine speed information

Claims (6)

전지 시스템의 자기 진단 기능을 가지는 제어부를 구비하고,
상기 제어부는, 아이들 스톱 기능을 탑재하는 차량의 차량 동작 상태의 정보 및 엔진 동작의 정보를 기초로, 차량이 동작 상태이고, 또한 엔진 정지 상태인 경우에 전류 계측을 실시했을 때의 전류 계측 결과에 따라, 축전지의 방전 전류의 값이 규정 이하이면, 계측계에 이상이 발생하고 있다고 판단하는 것을 특징으로 하는 전지 제어 장치.And a control unit having a self-diagnosis function of the battery system,
The control unit determines whether or not the vehicle is in the operating state and in the engine stop state based on the information of the vehicle operation state of the vehicle equipped with the idle stop function and the information of the engine operation, And determines that an abnormality has occurred in the measuring system when the value of the discharge current of the battery is below the specified value. 제 1 항에 있어서,
상기 차량 동작 상태의 정보는, 이그니션이 온인지 여부의 정보인 것을 특징으로 하는 전지 제어 장치.The method according to claim 1,
Wherein the information on the vehicle operation state is information on whether or not the ignition is ON. 제 1 항 또는 제 2 항에 있어서,
상기 엔진 동작의 정보는, 엔진 회전수인 것을 특징으로 하는 전지 제어 장치.3. The method according to claim 1 or 2,
Wherein the information on the engine operation is an engine speed. 제 1 항에 있어서,
상기 전지 제어 장치는, 차량 동작 중에 진행 정지되어 엔진이 정지된 아이들 스톱 상태에서 차량의 전장 부품에 대하여 당해 차량에 탑재되어 있는 상기 축전지로부터 전력 공급이 이루어지는 상기 아이들 스톱 기능을 탑재한 차량에 적용되고,
상기 제어부는, 이그니션이 온 상태이고, 또한, 엔진이 정지 중일 경우에 상기 아이들 스톱 상태라고 판단함과 함께, 상기 축전지의 방전 전류의 값이 규정 이하일 경우에 전류 계측계에 이상이 발생하고 있다고 판정하는 것을 특징으로 하는 전지 제어 장치.The method according to claim 1,
The battery control device is applied to a vehicle equipped with the idle stop function in which electric power is supplied from the battery mounted on the vehicle to an electric component of the vehicle in an idle stop state in which the engine is stopped and stopped while the vehicle is in operation ,
The control unit determines that the ignition is in the idle stop state when the ignition is on and the engine is stopped and determines that an abnormality occurs in the current measuring system when the value of the discharge current of the battery is less than the specified value And the battery control device. 제 2 항에 있어서,
상기 전지 제어 장치는, 차량 동작 중에 진행 정지되어 엔진이 정지된 아이들 스톱 상태에서 차량의 전장 부품에 대하여 당해 차량에 탑재되어 있는 상기 축전지로부터 전력 공급이 이루어지는 상기 아이들 스톱 기능을 탑재한 차량에 적용되고,
상기 제어부는, 이그니션이 온 상태이고, 또한, 엔진이 정지 중일 경우에 상기 아이들 스톱 상태라고 판단함과 함께, 상기 축전지의 방전 전류의 값이 규정 이하일 경우에 전류 계측계에 이상이 발생하고 있다고 판정하는 것을 특징으로 하는 전지 제어 장치.3. The method of claim 2,
The battery control device is applied to a vehicle equipped with the idle stop function in which electric power is supplied from the battery mounted on the vehicle to an electric component of the vehicle in an idle stop state in which the engine is stopped and stopped while the vehicle is in operation ,
The control unit determines that the ignition is in the idle stop state when the ignition is on and the engine is stopped and determines that an abnormality occurs in the current measuring system when the value of the discharge current of the battery is less than the specified value And the battery control device. 제 3 항에 있어서,
상기 전지 제어 장치는, 차량 동작 중에 진행 정지되어 엔진이 정지된 아이들 스톱 상태에서 차량의 전장 부품에 대하여 당해 차량에 탑재되어 있는 상기 축전지로부터 전력 공급이 이루어지는 상기 아이들 스톱 기능을 탑재한 차량에 적용되고,
상기 제어부는, 이그니션이 온 상태이고, 또한, 엔진이 정지 중일 경우에 상기 아이들 스톱 상태라고 판단함과 함께, 상기 축전지의 방전 전류의 값이 규정 이하일 경우에 전류 계측계에 이상이 발생하고 있다고 판정하는 것을 특징으로 하는 전지 제어 장치.The method of claim 3,
The battery control device is applied to a vehicle equipped with the idle stop function in which electric power is supplied from the battery mounted on the vehicle to an electric component of the vehicle in an idle stop state in which the engine is stopped and stopped while the vehicle is in operation ,
The control unit determines that the ignition is in the idle stop state when the ignition is on and the engine is stopped and determines that an abnormality occurs in the current measuring system when the value of the discharge current of the battery is less than the specified value And the battery control device.
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